<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE PERIOD ENDED MARCH 31, 1999 AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                          21,161
<SECURITIES>                                    12,802
<RECEIVABLES>                                   52,206
<ALLOWANCES>                                       487
<INVENTORY>                                     12,928
<CURRENT-ASSETS>                               109,759
<PP&E>                                         790,615
<DEPRECIATION>                                 366,488
<TOTAL-ASSETS>                                 669,474
<CURRENT-LIABILITIES>                           74,781
<BONDS>                                        343,713
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         6,756
<OTHER-SE>                                     168,147
<TOTAL-LIABILITY-AND-EQUITY>                   669,474
<SALES>                                              0
<TOTAL-REVENUES>                                88,429
<CGS>                                                0
<TOTAL-COSTS>                                   81,865
<OTHER-EXPENSES>                                 7,569
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               7,569
<INCOME-PRETAX>                                  1,778
<INCOME-TAX>                                       755
<INCOME-CONTINUING>                              1,023
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,023
<EPS-PRIMARY>                                     0.16
<EPS-DILUTED>                                     0.16<F1><F2>
<FN>
<F1> Amounts inapplicable or not disclosed as a separate line on the Balance 
Sheet or Statement of Income are reported as 0 herein.
<F2> Notes and accounts receivable - trade are reported net of allowances for 
doubtful accounts in the Balance Sheet.
</FN>